Plate heat exchanger

Abstract

The utility model discloses a plate heat exchanger, relates to the technical field of automobile battery heat exchange, and aims to solve the problems that in the prior art, the plate heat exchanger improves the heat exchange performance through multi-flow sacrifice flow resistance, and the energy consumption of a system is increased, and adopts the technical scheme that a cooling liquid inlet and outlet pipe and a refrigerant inlet and outlet pipe are arranged on a bracket; an upper side plate is arranged below the support, a core is arranged below the upper side plate, a lower side plate is arranged below the core, the core comprises a first heat exchange lamination, the first heat exchange lamination is fixed to the upper side plate, turbulent flow protrusions are arranged on the surface of the first heat exchange lamination, a second heat exchange lamination is arranged below the first heat exchange lamination, and cooling fins are arranged between the second heat exchange lamination and the first heat exchange lamination. According to the heat exchanger, the contact area between the heat exchanger and cooling liquid is increased through the partition cavity, the flow resistance is reduced, the heat exchange area is increased, the heat exchange efficiency is improved, better heat exchange is achieved, and the heat exchanger is simple in structure and not prone to being damaged.

Description

Technical Field

[0001] This utility model relates to the field of automotive battery heat exchange technology, specifically a plate heat exchanger. Background Technology

[0002] With the continuous advancement of new energy vehicle technology, plate heat exchangers will also undergo technological upgrades. Liquid cooling technology is currently the mainstream technology for cooling power batteries, with advantages such as fast cooling speed, large specific heat capacity, and high heat transfer coefficient. With the development of new materials and manufacturing technologies, the performance of plate heat exchangers will be further improved, requiring them to become more efficient and compact to meet the higher requirements of new energy vehicles for thermal management systems. As environmental regulations become increasingly stringent, high-efficiency plate heat exchangers will be more favored. Improving the heat transfer efficiency and lightweight level of plate heat exchangers requires more efficient heat dissipation materials, better thermal conductivity, lower density, and higher strength.

[0003] With the increasing demand for cooling in new energy batteries and the continuous improvement of energy efficiency in thermal management systems, traditional plate heat exchangers improve heat exchange performance by sacrificing flow resistance through multiple processes, which increases the energy consumption of the system. There is a need for a plate heat exchanger that can improve heat exchange efficiency and reduce flow resistance by using different heat exchange channels for different media. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a plate heat exchanger that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model discloses a plate heat exchanger. The technical solution adopted includes a support frame with coolant inlet / outlet pipes and refrigerant inlet / outlet pipes. An upper plate is located below the support frame, and a core is located below the upper plate. A lower plate is located below the core. The core includes a first heat exchange plate, which is fixed to the upper plate. The surface of the first heat exchange plate has turbulence protrusions. A second heat exchange plate is located below the first heat exchange plate. Heat dissipation fins are located between the second heat exchange plate and the first heat exchange plate. A first heat exchange plate is located below the second heat exchange plate. Multiple heat exchange plates, including the first and second heat exchange plates and the heat dissipation fins, are connected sequentially and sealed to each other.

[0006] As a preferred technical solution of this utility model, a refrigerant port and a coolant port are provided on the upper plate. The refrigerant port is connected to the refrigerant inlet / outlet pipe, and the coolant port is connected to the coolant inlet / outlet pipe. A sealing protrusion is provided at the bottom edge of the refrigerant port.

[0007] As a preferred embodiment of this utility model, the heat exchange fins are fixed below the upper plate. The upper plate has a refrigerant port and a coolant port. The upper plate has a downward-facing guide protrusion in the middle and multiple turbulence protrusions on its upper surface. The refrigerant port has a downward-facing sealing protrusion at its edge and a coolant port has an upward-facing sealing protrusion at its edge. The sealing protrusions are in contact with each other, and the sealing protrusions are in contact with the upper plate and connected to the coolant port. The turbulence protrusions are in contact with the upper plate.

[0008] As a preferred technical solution of this utility model, a second heat exchange plate is provided below the first heat exchange plate. The second heat exchange plate has a refrigerant port three and a coolant port three. A guide protrusion two is located downward in the middle of the second heat exchange plate. A sealing protrusion four is located upward in the third refrigerant port. A sealing protrusion five is located downward in the third coolant port. The sealing protrusion four is in contact with the sealing protrusion two. The sealing protrusion five is in contact with the sealing protrusion three.

[0009] As a preferred embodiment of this utility model, the heat dissipation fins have multiple flow channels, and the flow channels have partition cavities. There are multiple partition cavities, and they are arranged in an array.

[0010] As a preferred technical solution of this utility model, the lower plate is provided with refrigerant plug and coolant plug, the refrigerant plug is in two-phase contact with the sealing protrusion, and the coolant plug is in three-phase contact with the sealing protrusion.

[0011] As a preferred embodiment of this utility model, the bracket has a positioning groove, and the upper side of the upper plate has a positioning protrusion, the positioning groove and the positioning protrusion cooperating.

[0012] As a preferred embodiment of this invention, the coolant inlet / outlet pipe and the refrigerant inlet / outlet pipe have sealing anti-slip grooves.

[0013] Compared with the prior art, the beneficial effects of this utility model are: this utility model opens multiple flow channels on the heat dissipation fins, and opens partition cavities on the flow channels. The multiple partition cavities allow the coolant to flow inside the heat dissipation fins. The partition cavities increase the contact area between the coolant and the heat dissipation fins and reduce the flow resistance, increase the heat exchange area, improve the heat exchange efficiency, achieve better heat exchange, and have a simple structure that is not easily damaged. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an exploded view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the upper plate structure of this utility model. Figure 1 ;

[0017] Figure 4 This is a schematic diagram of the upper plate structure of this utility model. Figure 2 ;

[0018] Figure 5 This is a cross-sectional view of the refrigerant inlet pipe of this utility model;

[0019] Figure 6 This is a cross-sectional view of the coolant inlet pipe of this utility model;

[0020] Figure 7 This is a schematic diagram of the heat exchanger stack structure of this utility model. Figure 1 ;

[0021] Figure 8 This is a schematic diagram of the heat exchanger stack structure of this utility model. Figure 2 ;

[0022] Figure 9 This is a schematic diagram of the heat exchanger stack structure of this utility model. Figure 1 ;

[0023] Figure 10 This is a schematic diagram of the heat exchanger stack structure of this utility model. Figure 2 ;

[0024] Figure 11 This is a schematic diagram of the heat sink fin structure of this utility model;

[0025] Figure 12 This is an enlarged view of section A of this utility model;

[0026] Figure 13 This is a schematic diagram of the lower plate structure of this utility model.

[0027] In the diagram: 1. Bracket; 101. Positioning groove; 2. Coolant inlet pipe; 201. Coolant outlet pipe; 3. Refrigerant inlet pipe; 301. Refrigerant outlet pipe; 4. Upper plate; 401. Positioning protrusion; 402. Refrigerant port one; 4021. Sealing protrusion one; 403. Coolant port one; 5. Core; 6. Lower plate; 601. Refrigerant plug; 602. Coolant plug; 7. Heat exchange fins one; 701. [Unclear text - possibly a continuation of the previous sentence] 702. Flow protrusion; 703. Sealing protrusion two; 704. Refrigerant port two; 705. Coolant port two; 706. Sealing protrusion three; 707. Guide protrusion one; 8. Heat exchange fins two; 801. Refrigerant port three; 802. Coolant port three; 803. Guide protrusion two; 804. Sealing protrusion four; 805. Sealing protrusion five; 9. Heat dissipation fins; 901. Flow channel; 902. Partition cavity; 10. Sealing anti-slip groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0029] like Figures 1 to 13As shown, this utility model discloses a plate heat exchanger. The technical solution includes a support 1, on which are provided coolant inlet / outlet pipes and refrigerant inlet / outlet pipes. The coolant inlet / outlet pipes and refrigerant inlet / outlet pipes have sealing anti-slip grooves 10. The coolant inlet / outlet pipes include a coolant inlet pipe 2 and a coolant outlet pipe 201. A cold plate and a circulation pump are connected in series on the coolant inlet pipe 2 and the coolant outlet pipe 201. The cold plate contacts the battery to remove heat from the battery. The refrigerant inlet / outlet pipes include a refrigerant inlet pipe 3 and a refrigerant outlet pipe 301. A refrigeration circulation mechanism is connected in series between the refrigerant inlet pipe 3 and the refrigerant outlet pipe 301 to cool the coolant and remove heat from the coolant. An upper plate 4 is provided below the support 1. The support 1 has a positioning groove 101. The upper surface of the upper plate 4... A positioning protrusion 401 is provided, and the positioning groove 101 cooperates with the positioning protrusion 401. A refrigerant port 402 and a coolant port 403 are provided on the upper plate 4. The refrigerant port 402 is connected to the refrigerant inlet and outlet pipes, and the coolant port 403 is connected to the coolant inlet and outlet pipes. A sealing protrusion 4021 is provided at the bottom edge of the refrigerant port 402. A core 5 is provided below the upper plate 4, and a lower plate 6 is provided below the core 5. The core 5 includes a heat exchange plate 7, which is fixed to the upper plate 4. The surface of the heat exchange plate 7 has a turbulence protrusion 701. The heat exchange plate 7 is fixed to the lower part of the upper plate 4. A second refrigerant port 703 and a second coolant port 704 are provided on the upper plate 4. A downward-facing guide protrusion 706 is provided in the middle of the upper plate 4. This allows the refrigerant to flow in a U-shape, increasing the flow time for more complete heat exchange. The upper surface of the upper plate 4 has multiple turbulence protrusions 701. The edge of the refrigerant inlet 703 has a downward-facing sealing protrusion 702, and the edge of the coolant inlet 704 has an upward-facing sealing protrusion 705. The sealing protrusions 4021 and 702 are fitted together and sealed by welding. The sealing protrusion 705 is fitted to the upper plate 4 and connected to the coolant inlet 403. The turbulence protrusions 701 are fitted to the upper plate 4. Below the heat exchanger plate 7 is a heat exchanger plate 8, with refrigerant inlet 801 and coolant inlet 802. The center of the heat exchanger plate 8 has a downward-facing guide protrusion 803, which allows coolant to enter... The flow pattern is U-shaped, increasing the flow time for more complete heat exchange. Refrigerant inlet 3 (801) has a sealing protrusion 4 (804) pointing upwards, and coolant inlet 3 (802) has a sealing protrusion 5 (805) pointing downwards. Sealing protrusion 4 (804) fits into sealing protrusion 2 (702) and is fixed in place by welding. Sealing protrusion 5 (805) fits into sealing protrusion 3 (705) and is fixed in place by welding. Heat exchange fins 9 are located between heat exchange stack 2 (8) and heat exchange stack 1 (7). Multiple flow channels 901 are formed on the heat exchange fins 9, and partition cavities 902 are formed on the flow channels 901. Multiple partition cavities 902 are arranged in an array. Heat exchange stack 1 (7) is located below heat exchange stack 2 (8).There are multiple heat exchange fins 7, 8, and 9, which are connected sequentially and sealed together by welding. The lower plate 6 has a refrigerant plug 601 and a coolant plug 602. The refrigerant plug 601 is in contact with the second sealing protrusion 702, and the refrigerant plug 601 and the second sealing protrusion 702 are sealed together by welding. The coolant plug 602 is in contact with the third sealing protrusion 705, and the coolant plug 602 and the third sealing protrusion 705 are sealed together by welding.

[0030] The working principle of this utility model is as follows: During heat exchange, the coolant after heat exchange with the battery enters the plate heat exchanger through the coolant inlet pipe 2. Due to the contact between the sealing protrusion 5 805 and the sealing protrusion 3 705, the coolant flows within the heat dissipation fins 9. The isolation cavity 902 increases the contact area with the coolant and reduces the flow resistance, achieving better heat exchange and transferring heat to the heat exchange stack 1 7 and the heat exchange stack 2 8. The refrigerant enters the plate heat exchanger through the refrigerant inlet pipe 3. Due to the contact between the sealing protrusion 2 702 and the sealing protrusion 4 804, the refrigerant flows at the turbulence protrusion 701, thereby absorbing the heat from the heat exchange stack 1 7 and the heat exchange stack 2 8. Then, the refrigerant is cooled by the refrigeration cycle mechanism, achieving cyclic heat exchange.

[0031] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0032] Components not described in detail in this article are existing technologies.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plate heat exchanger, comprising a support frame (1), characterized in that: The bracket (1) is provided with coolant inlet and outlet pipes and refrigerant inlet and outlet pipes. The bracket (1) is provided with an upper side plate (4) below it. The upper side plate (4) is provided with a core (5) below it. The core (5) is provided with a lower side plate (6) below it. The core (5) includes a heat exchange plate one (7). The heat exchange plate one (7) is fixed to the upper side plate (4). The surface of the heat exchange plate one (7) has a turbulence protrusion (701). The heat exchange plate one (7) is provided with a heat exchange plate two (8) below it. There are heat dissipation fins (9) between the heat exchange plate two (8) and the heat exchange plate one (7). The heat exchange plate one (7) is provided with a lower side plate (7) below it. There are multiple heat exchange plates one (7), heat exchange plate two (8) and heat dissipation fins (9), which are connected in sequence and sealed to each other.

2. A plate heat exchanger according to claim 1, characterized in that: The upper plate (4) has a refrigerant port (402) and a coolant port (403). The refrigerant port (402) is connected to the refrigerant inlet / outlet pipe, and the coolant port (403) is connected to the coolant inlet / outlet pipe. A sealing protrusion (4021) is provided at the bottom edge of the refrigerant port (402).

3. A plate heat exchanger according to claim 2, characterized in that: The heat exchange plate 1 (7) is fixed below the upper plate (4). The upper plate (4) has a refrigerant port 2 (703) and a coolant port 2 (704). The upper plate (4) has a downward-facing guide protrusion 1 (706) in the middle. The upper surface of the upper plate (4) has multiple turbulence protrusions (701). The edge of the refrigerant port 2 (703) has a downward-facing sealing protrusion 2 (702). The edge of the coolant port 2 (704) has an upward-facing sealing protrusion 3 (705). The sealing protrusion 1 (4021) and the sealing protrusion 2 (702) are in contact with each other. The sealing protrusion 3 (705) is in contact with the upper plate (4) and is connected to the coolant port 1 (403). The turbulence protrusion (701) is in contact with the upper plate (4).

4. A plate heat exchanger according to claim 3, characterized in that: Below the first heat exchange plate (7) is a second heat exchange plate (8). The second heat exchange plate (8) has a refrigerant port (801) and a coolant port (802). The second heat exchange plate (8) has a flow guide protrusion (803) facing downward in the middle. The refrigerant port (801) has a sealing protrusion (804) facing upward. The coolant port (802) has a sealing protrusion (805) facing downward. The sealing protrusion (804) is in contact with the sealing protrusion (702), and the sealing protrusion (805) is in contact with the sealing protrusion (705).

5. A plate heat exchanger according to claim 1, characterized in that: Multiple flow channels (901) are formed on the heat dissipation fins (9), and partition cavities (902) are formed on the flow channels (901). There are multiple partition cavities (902) and they are arranged in an array.

6. A plate heat exchanger according to claim 4, characterized in that: The lower plate (6) is provided with a refrigerant plug (601) and a coolant plug (602). The refrigerant plug (601) is in contact with the second sealing protrusion (702), and the coolant plug (602) is in contact with the third sealing protrusion (705).

7. A plate heat exchanger according to claim 1, characterized in that: The bracket (1) has a positioning groove (101), and the upper side plate (4) has a positioning protrusion (401) on its upper side surface. The positioning groove (101) and the positioning protrusion (401) cooperate with each other.

8. A plate heat exchanger according to claim 1, characterized in that: The coolant inlet and outlet pipes and the refrigerant inlet and outlet pipes have sealing anti-slip grooves (10).

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